Stamping-machine.



L. A. CASGRAIN.

STAMPING MACHINE.

APPLICATION Hum r23. 20, 1907.

1,030,1 61 Patented June 18, 1912.

2 SHEBTS-SHEET l.

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I/V/T/VZSSES COLUMBIA PLANOGRAPII CO..WASHINGTON C.

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LOUIS A. OASGRAIN, OF. BEVERLY, MASSACHUSETTS, ASSIGNOB, T0 UNITED SHOEMACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF 'NEWJERSEY.

To all whom it may concern:

Be it known that I, LOUIS A. GASGRAIN,

Thisinvention relates to stamping machines, and particularly to stampingmachines adapted for impressing characters upon parts of boots andshoes, especially those parts such as uppers, upon which it is desiredto stamp two different characters. In the manufacture of boots andshoesit is customary to mark uppers both for size and width after the partshave been cut out. Prior to this invention, this has usually been doneby the cutter, who marks them by hand with a crayon or pencil. Thismethod of marking is objectionable for several reasons. One reason isthat the marks are liable to be efiaced in handling the parts, thuscausing delay and confusion in assembling them. Another reason is thatthe cutter is necessarily a skilled workman, and considerable of histime is consumed during the course of a day in thus marking the parts.Still another reason is that the operation of marking by hand is slow.

The objects of the invention are to provide a machine which shall becertain and reliable in its operation, which shall occupy thel'eastpossible space consistent with cf fectiveness, which may be operated bya person of no particular skill, which will perform the workexpeditiously, and which will mark the stock in a permanent manner withno liability of the marks being efi'aced in handling the stock. Iaccomplish these objects by providing a machine having two movablemembers each of which carries stamping dies which the operator may bringintocontact with the stock after he has brought the desired dies intothe proper position for stamping.

In the preferred embodiment of the invention, the die-carrying membersare mounted concentrically and independently of each other in order thatthey may be Specification of Letters Patent.

Application filed-February 20, 1907.

Patented June 18, f9f2.

Serial No. 358,441

carried by one of the members are provided with characters of dlfierentdenomlnatlons belonging to one system of enumeration,

while the dies carried by the other member are provided with charactersof different denominations belonging to another system of enumeration.One set of characters may conveniently consist of figures to indicatedifferent sizes, while the other set consists of letters to indicatedifferent widths. Each of. the two members is preferably provided withsurfaces having characters corresponding to those on its dies, and apointer may be provided to indicate the particular die of each setwhichis in stamping position. The the-carrying members may be convenientlymounted as follows to prevent them from having frictional engagementwith each other. One of the members is carried on an axle secured to thehead of the machine, and surrounding this member is a sleeve secured tothe head atone end and having an outturned flange at the other end. Thesecond member is placed around this sleeve and is supported by theoutturned flange on the a sleeve. The two members are thus mountedentirely independently of each other.

The means for bringing the dies into contact with the'stockis preferablyoperated through a one revolution clutch normally held out of engagedposition. The means for putting the clutch into engaged position ispreferably provided with a lock which prevents said means from operatingwhen the stamping dies and actuating means therefor are not properlypositioned relatively to each other. A. work-support or anvil upon whichto place the stock during the stamping operation is provided. Thiswork-support is preferably yieldingly supported in order to precludestraining the machine or mutilating the stock. A. convenient way ofaccomplishing thisis by resting the work-support on one end of a springbar held from movement at the other end.

The features above enumerated and others incident to the invention willbe bestiunderstood and appreciated from the following description of amachine which constitutes a preferred embodiment of the inventionan'd'has been selected for the purpose of illustration and shown in theaccompanying drawings, in which,-

Figure 1 is a view in side elevation of the machine with certain partsbroken away to disclose the interior construction; Fig. 2 is a view inhorizontal section; Fig. 3 is a vertical section on the line aa, Fig. 2;and Fig. 4 is a detail view in section on the line 6-1), Fig. 2.

A base 2 carries a frame 4 provided with a bearing 6 for a driving shaft8. The driving shaft has a pulley 10 on one end and an eccentric stud 12on the other end which turns in a transverse slide 14 held bet-ween ways16, 16 on a vertical slide 18 which is held between ways 20, 20connected with the frame. The slide 18 carries two drivers 22, 22arranged to actuate the stamping dies as will be explained hereinafter.Secured to the frame is a head or cap piece provided with a dependingcentral portion 24 and a depending circumferential flange 26. Arotatable member or turret 28 is rotatably secured t0 the head or cappiece by an axle or bolt 30, the upper end of which is screwthrcadedinto the depending portion 24 and the lower end of which has an enlargedportion upon which said member rests. The turret is provided with aseries of circumferentially arranged apertures within which are mountedstamping dies 32 normally held retracted by springs 34 and preventedfrom rotation in the apertures by pins 35 which project into slots inthe sides of the dies. The lower ends of the dies are provided withcharacters such as letters to indicate widths. The turret 28 has ahorizontal flange 36 with a vertical upstanding flange 38 formed aboutits periphery. The exterior of the latter flange has a series of grooves40 and also a series of characters corresponding to those on the dies32. A spring 42 secured at one end to the frame has its other end bentso as to engage in the grooves 40 to prevent the turret from beingturned accidentally. A second rotatable member or turret 44 is rotatablymounted around the turret 28, the two turrets being separated by adepending cylindrical portion or sleeve 46 secured to the'head or cappiece preferably by screwthreads, as shown. The sleeve 46 has acircumferential flange or shoulder 47 upon which the outer turret issupported in order that it may not rest upon the inner turret 28. Theturret 44 is provided with a series of circumferentially arrangedapertures within which are mounted stamping dies 48 normally heldretracted by springs 50 andprevented from rotation in the apertures bypins 51. The lower ends of the dies are provided with characters such asfigures to indicate sizes and the flange 36 has a series of apertures toregister with the apertures in the turret 44 in order to permit the dies46 to be projected below the lower face.

The turret 44 has a flange or enlarged portion lying over the upper endof the flange 38, such portion being provided with a series of grooves52 and a series of characters corresponding to those on the dies 48. Aspring 54 similar to the spring 42 is secured at one end to the frameand the other end is bent to engage the grooves 52 in the manner shownin Fig. 2. It will thus be seen that the turrets are rotatably mountedindependently of each other so that any one of the'figures may bebrought over a worksupportor anvil 56 contemporaneously with any one ofthe letters. When in stamping position over the anvil, the two dies, oneof which carries the desired figure and the other the desired letter,are in axial alinement with the two drivers 22 which may be reciprocatedthrough apertures in the head or cap piece. The anvil is supported in asocket 58 in the base and has a stem 60 extending through the bottom ofthe socket and resting 011 one end of a spring bar 62 fulcrumed at 64,the other end of saidspring bar being held down by a bolt 66. A secondbolt 68 engages the upper surface of the bar between the fulcrum and thestem of the anvil. By adjusting the bolts, the resistance of the springbar may be regulated as desired. In order that the characters carried bythe stamping dies may make a permanent impression on the stock, saidcharacters are preferably constructed with thin shallow edges terminatedby shoulders on the bottoms of the stamping dies. The characters cutinto the surface of the stock, the depth of out being limited by theshoulders. Any further movement of the stamping dies toward the anvilmerely results in producing movement of the anvil in opposition to'thesustaining force exerted by the spring bar. A gage 70 is adjustablysecured with relation to the anvil and is held in desired position by aset screw 7 2.

The pulley 10 is loose on the driving shaft and a one revolution clutchis preferably provided by means of which the dies and connectingmechanism may be put into operation. A member 74 of the clutch is ur edinto clutching position by a spring 76. When at rest, said member isretracted by a wedge 7 8 on the upper end of a rod 80 held up by aspring 82 so as to engage the member 74. The rod is connected at itslower end to a treadle (notshown). "When the treadle is depressed andthen immediately released, the driving shaft will make one revolutionand then stop. A locking device is provided which makes it impossible tostart the machine when the apertures in the turrets are not in alinementwith the drivers. Breakage of the machine by the drivers striking on theupper faces of the turrets is therefore rendered impossible. Saidlooking device is preferably constructed asfoland letter.

lows: A lever Set is pivoted at 86 to the base. One end of this leverhas pivoted to it a vertically slidable pin 88 while the other end ofthe lever is pivoted to the rod 80. The rod 88 is so mounted as to be inalinement with an aperture in the flange 36 on the inner turret and anaperture inthe outer turret when the turrets are properly positioned.Byreferring to Fig. 4 it will be seen that the pin 88 extends through anaperture in the flange 36 and into the bot tom of an aperture in theouter turret when the treadle and rod 80 connected thereto are depressedsutficiently to remove the wedge 78 from posit-ion in which itunclutches the member 74. It is therefore impossible to depress the rod80 sufliciently to start the machine unless both turrets are properlypositioned. When the rod 88 has been elevated to enter the alinedapertures, both turrets are positivelylocked to the frame and will beheld rigidly in position until the treadle is released and the rodretracted. A pointer 90 having an enlarged portion provided with anaperture 92 is secured to the head or cap piece in such position thatone end of the pointer will indicate the letter which is in stampingposition while the fi 'ure which is in stamping position will appearwithin the aperture.

The operation of the machine is as follows: The operator while observingthe characters indicated by the pointer, turns the turrets until heobtains the desired figure The turrets may be turned readilynotwithstanding the detaining force eX- erted by the springs 42 and 54:,the operator grasping the corrugated surfaces containing the grooves 40and 52 for this purpose. He then places the stock to be stamped 1nproper position on the anvil and by depressing the treadle sets themachine in operation whereupon the dies descend and stamp the stock.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is 1. In a machine of the classdescribed the combination of a plurality of independently rotatable,concentric, die-carrying members, a plurality of axially movablestamping dies carried by each member and means controlled by theoperator tor moving certain predetermined dies simultaneously to causethem to mark the work.

2. In a machine of the class described the combination of a die carryingmember, a plurality of stamping dies carried by said member, mechanismfor moving a die to mark the work, power driven means for operating saidmechanism and positive means cooperating with said member to prevent theactuation of said mechanism when none of the dies are in operativerelation thereto.

8. In a machine of the class described, the

combination with two rotatable concentric members, of means forsupporting said members independently of each other, a plurality ofstamping dies carried by each of said members, and means forsimultaneously actuating certain predetermined ones of the dies carriedby ditferent members.

a. In a machine of the class described, the combination with tworotatable members, of a head, an axle secured directly to said head andsupporting one of said members, a sleeve also secured to said head andby which the other of said members is sup ported, stamping dies carriedby each of said members, and means for actuating said dies.

5. In a machine of the class described, the combination with tworotatable members, of a head, an axle secured to said head, an enlargedportion upon said axle upon which one of said members is supported, asleeve secured to said head concentrically with said axle, a flange onsaid sleeve upon which the other of said members is supported, stampingdies carried by each of said members, and means for actuating said dies.

6. In a machine of the class described, the

combination with two rotatable members,

of a plurality of stamping dies carried by each of said members,circumferential flanges on each of said members having characterscorresponding to those carried by the dies, and means for actuatingcertain predetermined ones of said dies.

7. In a machine of the class described, the combination with tworotatable concentric members, of a plurality of stamping dies carried byeach of said members, a horizontal flange on the inner one of saidmembers, a circumferential flange carried by said horizontal flange, acircumferential flange on the outer one of said members, saidcircumferential flanges being in vertical alinement with each other, andhaving characters corresponding to those carried by the dies, and meansfor actuating certain predetermined ones of said dies.

8. In a machine of the class described, the combination with tworotatable concentric members, stamping dies carried by each ofsaidmembers, and separate drivers for actuating said dies.

'9. In a machine of the class described, the combination with tworotatable concentric members, stamping dies carried by each of saidmembers, a reciprocatory slide, and drivers carried thereby in line witha die in each of said members.

10. In a machine of the class described, the combination with stampingmechanism, of an anvil, a spring bar for supporting said anvil, a pivotfor said bar, and adjusting bolts for said bar located on opposite sidesof the pivot.

11. In a machine of the class described, the combination with an anviland cooperating stamping mechanism, of a clutch, means for disengagingsaid clutch, and positive means for keeping said clutch in disengagedposition when the stamping mechanism is improperly positioned.

12. In a machine of the class described, the combination with an anviland cooperating stamping mechanism, of a clutch normally held indisengaged position, means for putting said clutch into engagedposition, and positive means for preventing the clutch from being movedinto the latter position when the stamping mechanism is improperlypositioned.

13. In a machine of the class described, the combination with stampingmechanism, of a clutch, a treadle-rod, a wedge on said treadle-rod tonormally hold said clutch in disengaged position, a lever connected withsaid treadle-rod, and a pin connected with said lever and arranged toprevent the clutch from being moved into engaged position when thestamping mechanism is improperly positioned.

1a. In a machine of the class described, the combination with tworotatable concentric members, each of which has a series of aperturestherethrough, stamping dies mounted in said apertures, a head whichsupports said members, a reciprocating slide, two drivers carriedthereby in line with openings through said head, a clutch, means forholding said clutch in disengaged position, means for putting saidclutch into engaged position, and a pin operatively connected to saidlast-mentioned means and arranged to prevent the clutch being moved intoengaged position when either of said rotatable members has none of itsapertures in line with the drivers.

15. In a machine of the class described, the combination with an anviland cooperating tools movable transversely into operative position, ofan actuator for relatively moving said anvil and tools to operate uponthe work, power operated mechanism for moving the actuator, and positivemeans for preventing the actuation of said power operated mechanism whenthe operating tools are improperly positioned transversely, said meansacting to lock said tools against transverse movement when the toolshave been properly positioned.

16. In a machine of the class described,

the combination with an anvil, of a rotatable die carrier havingstamping dies mounted therein, an actuator for relatively moving one ofsaid dies and anvil to stamp the work, power operated mechanism formoving the actuator, and positive means for preventing the actuation ofsaid power operated mechanism when the die carrier is improperlypositioned, said means acting, when the carrier has been turned to theproper position, to lock said carrier against turning movement.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LOUIS A. CASGRAIN.

lVitnesses JOHN H. RUOKMAN, FREDERICK L. EDMANDS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

